First of all use the hammer, mirror, jet, ninja, yo-yo, or plasma. I suggest hammer. Abuse it's strong power and smash through enemies with Hammer's powerful Up + B attack, you must also abuse blocking throughout this challenge, WHENEVER someone attacks, if you can't move out of the way, block, train yourself to do that. Also learn of which moves smash through block, and how much damage they do if they hit normally, decide if it is better to block or try to dodge. In the battle: THIS MAY ALSO WORK ON TRUE ARENA Good Luck